KolibriOS/kolibrios
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i915: enable hotplug && power savings

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git-svn-id: svn://kolibrios.org@3482 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Sergey Semyonov (Serge)
2013-04-26 11:01:23 +00:00
parent d67b35544c
commit c38691bc69
23 changed files with 365 additions and 256 deletions
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14
drivers/include/linux/bug.h
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@@ -62,4 +62,18 @@
BUILD_BUG_ON((n) == 0 || (((n) & ((n) - 1)) != 0))
#define printk_once(fmt, ...) \
({ \
static bool __print_once; \
\
if (!__print_once) { \
__print_once = true; \
printk(fmt, ##__VA_ARGS__); \
} \
})
#define pr_warn_once(fmt, ...) \
printk_once(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
#endif

29
drivers/include/linux/jiffies.h
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@@ -302,6 +302,35 @@ extern u64 nsec_to_clock_t(u64 x);
extern u64 nsecs_to_jiffies64(u64 n);
extern unsigned long nsecs_to_jiffies(u64 n);
static unsigned long round_jiffies_common(unsigned long j, bool force_up)
{
int rem;
unsigned long original = j;
rem = j % HZ;
/*
* If the target jiffie is just after a whole second (which can happen
* due to delays of the timer irq, long irq off times etc etc) then
* we should round down to the whole second, not up. Use 1/4th second
* as cutoff for this rounding as an extreme upper bound for this.
* But never round down if @force_up is set.
*/
if (rem < HZ/4 && !force_up) /* round down */
j = j - rem;
else /* round up */
j = j - rem + HZ;
if (j <= GetTimerTicks()) /* rounding ate our timeout entirely; */
return original;
return j;
}
unsigned long round_jiffies_up_relative(unsigned long j);
#define TIMESTAMP_SIZE 30
#endif

7
drivers/include/linux/kernel.h
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@@ -411,5 +411,12 @@ struct pagelist {
(p) = (v); \
})
unsigned int hweight16(unsigned int w);
#define cpufreq_quick_get_max(x) GetCpuFreq()
extern unsigned int tsc_khz;
#endif

76
drivers/include/linux/wait.h
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@@ -27,7 +27,7 @@ static inline void __add_wait_queue(wait_queue_head_t *head, wait_queue_t *new)
list_add(&new->task_list, &head->task_list);
}
/*
#define __wait_event(wq, condition) \
do { \
DEFINE_WAIT(__wait); \
@@ -41,7 +41,7 @@ do { \
finish_wait(&wq, &__wait); \
} while (0)
*/
#define wait_event_timeout(wq, condition, timeout) \
({ \
@@ -133,76 +133,6 @@ init_waitqueue_head(wait_queue_head_t *q)
};
/*
* Workqueue flags and constants. For details, please refer to
* Documentation/workqueue.txt.
*/
enum {
WQ_NON_REENTRANT = 1 << 0, /* guarantee non-reentrance */
WQ_UNBOUND = 1 << 1, /* not bound to any cpu */
WQ_FREEZABLE = 1 << 2, /* freeze during suspend */
WQ_MEM_RECLAIM = 1 << 3, /* may be used for memory reclaim */
WQ_HIGHPRI = 1 << 4, /* high priority */
WQ_CPU_INTENSIVE = 1 << 5, /* cpu instensive workqueue */
WQ_DRAINING = 1 << 6, /* internal: workqueue is draining */
WQ_RESCUER = 1 << 7, /* internal: workqueue has rescuer */
WQ_MAX_ACTIVE = 512, /* I like 512, better ideas? */
WQ_MAX_UNBOUND_PER_CPU = 4, /* 4 * #cpus for unbound wq */
WQ_DFL_ACTIVE = WQ_MAX_ACTIVE / 2,
};
struct work_struct;
struct workqueue_struct {
spinlock_t lock;
struct list_head worklist;
};
typedef void (*work_func_t)(struct work_struct *work);
struct work_struct {
struct list_head entry;
struct workqueue_struct *data;
work_func_t func;
};
struct delayed_work {
struct work_struct work;
};
static inline struct delayed_work *to_delayed_work(struct work_struct *work)
{
return container_of(work, struct delayed_work, work);
}
struct workqueue_struct *alloc_workqueue_key(const char *fmt,
unsigned int flags, int max_active);
#define alloc_ordered_workqueue(fmt, flags, args...) \
alloc_workqueue(fmt, WQ_UNBOUND | (flags), 1, ##args)
int queue_delayed_work(struct workqueue_struct *wq,
struct delayed_work *dwork, unsigned long delay);
#define INIT_WORK(_work, _func) \
do { \
INIT_LIST_HEAD(&(_work)->entry); \
(_work)->func = _func; \
} while (0)
#define INIT_DELAYED_WORK(_work, _func) \
do { \
INIT_LIST_HEAD(&(_work)->work.entry); \
(_work)->work.func = _func; \
} while (0)
struct completion {
unsigned int done;
wait_queue_head_t wait;
@@ -221,7 +151,5 @@ int autoremove_wake_function(wait_queue_t *wait, unsigned mode, int sync, void *
#define DEFINE_WAIT(name) DEFINE_WAIT_FUNC(name, autoremove_wake_function)
#endif

85
drivers/include/linux/workqueue.h Normal file
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@@ -0,0 +1,85 @@
#ifndef _LINUX_WORKQUEUE_H
#define _LINUX_WORKQUEUE_H
#include <linux/list.h>
#include <syscall.h>
struct work_struct;
typedef void (*work_func_t)(struct work_struct *work);
/*
* Workqueue flags and constants. For details, please refer to
* Documentation/workqueue.txt.
*/
enum {
WQ_NON_REENTRANT = 1 << 0, /* guarantee non-reentrance */
WQ_UNBOUND = 1 << 1, /* not bound to any cpu */
WQ_FREEZABLE = 1 << 2, /* freeze during suspend */
WQ_MEM_RECLAIM = 1 << 3, /* may be used for memory reclaim */
WQ_HIGHPRI = 1 << 4, /* high priority */
WQ_CPU_INTENSIVE = 1 << 5, /* cpu instensive workqueue */
WQ_DRAINING = 1 << 6, /* internal: workqueue is draining */
WQ_RESCUER = 1 << 7, /* internal: workqueue has rescuer */
WQ_MAX_ACTIVE = 512, /* I like 512, better ideas? */
WQ_MAX_UNBOUND_PER_CPU = 4, /* 4 * #cpus for unbound wq */
WQ_DFL_ACTIVE = WQ_MAX_ACTIVE / 2,
};
struct workqueue_struct {
spinlock_t lock;
struct list_head worklist;
struct list_head delayed_worklist;
};
struct work_struct {
struct list_head entry;
struct workqueue_struct *data;
work_func_t func;
};
struct delayed_work {
struct work_struct work;
unsigned int delay;
};
static inline struct delayed_work *to_delayed_work(struct work_struct *work)
{
return container_of(work, struct delayed_work, work);
}
extern struct workqueue_struct *system_wq;
void run_workqueue(struct workqueue_struct *cwq);
struct workqueue_struct *alloc_workqueue_key(const char *fmt,
unsigned int flags, int max_active);
#define alloc_ordered_workqueue(fmt, flags, args...) \
alloc_workqueue(fmt, WQ_UNBOUND | (flags), 1, ##args)
int queue_delayed_work(struct workqueue_struct *wq,
struct delayed_work *dwork, unsigned long delay);
bool schedule_delayed_work(struct delayed_work *dwork, unsigned long delay);
#define INIT_WORK(_work, _func) \
do { \
INIT_LIST_HEAD(&(_work)->entry); \
(_work)->func = _func; \
} while (0)
#define INIT_DELAYED_WORK(_work, _func) \
do { \
INIT_LIST_HEAD(&(_work)->work.entry); \
(_work)->work.func = _func; \
} while (0)
#endif /* _LINUX_WORKQUEUE_H */